Quadruplex printing telegraphy.



I. KITSEE.

QUADBUPLEX PRINTING TELEGRAPHY. APPLIOATION FILED SEPT. 3, 19-10.

987,631, J Patented Mar.21,1911-.

2 SHEETS-SHEETL WM/mews I. KI LTSEE. QUADRUPLEX PRINTING TELEGRAPHY.

APPLIGATION FILED SEPT. 3. 1910.

Patented M 21, 1191 1.

- $2 SHEETS-SHEET 2.

ISIDOR, KITSEE, OF

rim-unaware. assessments.

QUADRUPLEX rnnvrme rnnnennrnr.

Specification of Letters latent. Patented Mar. 21, 1911.

Application filed September 3, 1910. Serial No. 580,413.

To all whom it may concern.

Be it known that I, ISlDOR Kn'snn, citizen of the United States, residing at Philzfdelphia, in the county of Philadelphia and Sta-te'of Pennsylvania, have invented certain new and useful Improvements in QuadruplexPrinting Telegraphy, of which 'thefollowing is a specification,

My invention relates to an improvement quadruplex printing telegraphy. Its ob- "knot is to produce a quadruplex printing sysur in a simple and efiicient manner. My invention is applicable to difierent systems '01 priiiting telegraphy, but its great value is most apparent in a system of printing telegraphy in which the groupings of the different ChHIHGlCI'S of the Morse alphabet are made use of for the purpose of selecting locally the required type. Of such systems, the system now used by one of the largest telegraph companies and which is or was known as the Barclay printer is the one mostlv. in use to-day and I, therefore,

will describe my invention as being applicable to such system, it being understood that this invention can be-as said above-applied to other systems.

In the practical working of a system of quadruplex printing telcgraphy with the aid of one or the other of the existing types of printing telegraphy, it is of great importance-that the transmitting means now used for such system should be employed in quadruplexing the same; so also should the printing. organism not be illustrated at all as every alteration of either the transmitting or printing devices would retard from the value of the invention, as it is well known that the discarding of already standardized instruments and substituting for same new instruments is not favorably looked upon by the-companies using these instruments In my invention, therefore, I have taken care to make use of exactly the organism as is now used and have added thereto instruments which can be secured at a very small. cost.

In the accompanying drawings Figure 1 is a diagram of the transmitting station and Fig. 2 is a diagram of the receiving station.

I will first describe the transmitting organism as illustrated in Fig. 1. In this figure, A is the transmitting organism of one operator and B the transmitting organism of the second operator.- In the printing system abovereferred to, two impulses are trans nit-ted for each character, one impulse generally the positive-to mark the beginning of the character and one impulse. generally the negative to mark the end of this character. In practice, a paper is made use of haiig ing for each character two perforations, one perforation adapted to allow contactingpf a positive source of current with the .line and the 0 posite perforation adapted to allow contacting of the negative source of; current with the line. The lineal distance between these two perforations designates the character,-if the same should be a dot or dash. In actual practice, a device similar to the well known Wheatstone transmitter is employed as contact maker.

,I have not illustrated this device in its detail but have only illustrated the same in conventional sign and Ihave designated the diflerent parts of this 'deviceas follows 2 is the pap'erp3, 3, the perforations; 4 and 5 are the two contactmakers, here shown as brushes and 6 the conductor with which the contact makers should connect.- In the system above referred to, the contact makers connect directly the necessary source of current to the wire, but in my invention, I have recourse to the following arrangement :-I connect the Conductor 6 to a source of current 10; the other pole of this source I connect With neutralwire of a diiferential polar relay,-,l1. -One of the brushes, here shown as the brush 4, is connected with the winding 12 of this polar relay and the brush 5 is connected here with the winding 13 of this polar relay. There fore, when the brush 4 conneCtS thr ugh a perforation with the conductor 6, a con-. nection is made with the batterylO through one winding of the diiierential polar relay 11, and through this connection, the relay is energized in a manner armature 7 normally rests and toward and in contact with the stop 8. At this stop it .Will rest till the brush 5 so-as to move the the conductor closes a circuit comprising the conductor 6, battery 10, winding 13 ofrelay as this Winding is in makes contact with the conductor 6. The contactingof this brush with magnetized in a away from the stop 9 where it I and the batery 30; These two batteries are- ,in opposition as to each other and should consistpreferably of the same number of cells. The battery 30 comprises the sections 30 and 30". To one terminal of the battery 25 is connected the wire and to the other terminal of said battery .is connected the wire'16. To the section 30 of the battery 30 is connected at one terminal the wire 17 and at the other terminal the wire 18.- To

- the w-ire'17 is connected the electro-magnet 26., The wire 15 of the battery terminates in the stop 19 of the electro-magnet. 26 and at this stop the armature 20 of said electromagnet normallyrests. This armature is connected through wire 21 to the stop 8 of tlie polar diiterential relay "11.

The transmitting means of the station B comprise the paper 2, contact makers 4 and 5, conductor 6, source of current 10", differential polar relay. 11, the windings 12 and 13 stop 8, stop 9, andarmature 7.- The stop 8 is connected through wire 22 with one terminal of the coil of electro-magnet 26. The junction'of the other terminal of.

the contacting of brush 4 with the conductor 4 6. This makes a -circuitas said abovewhich throws the armature 7 of the relay 11. intoconnection with contact 8. Throughthis connection, a shunt is established around battery 25 comprising wire l6,armature 7,-

stop 8,wire 2l,armature 20, stop 19 and Wire 15. Through the shunting ofthe battery 25, the whole force of the battery will be free and a current will flow in the direction of the unfeathered arrow .over' the line.- As in most all. quadruplex systems, the receiving organism comprises'(besides other parts)- a polar relay adapted to be worked'by weak current of one polarity, and a neutral relay adapted to be worked by a heavy current in-' dependent of polarity. Now,.it'is supposed that the whole force of the battery 30 which is available is suflicient to'ope'ratc' the neutral relay and, therefore, the impulses transmitted from the station A will operate this neutral relay in accordance'with the perfo'- rations 3 of thepaper 2. It is now supposed that the'operatorat B desires to telegraph. Here the contacting of the brush i with the conductor 6 will markthe begin ning of an impulse and as the circuit made through this contact will energize the .differential polar'relay 11 in a manner so that the armature 7 will move toward'and' in connection with contact 8, the section 30? of the battery 30 will-be short circuited' and this short circuit will comprise wire 18,- art-- mature, 7, stop 8*,wire22, coil of electro-.

magnet 26 and Wire 17 Through the short circuiting' of this 'part .of' the -battery 30, part of thebatt'ery 25 -.will be fr'eeandavailable and as the flow of the battery from 25 is of a direction adapted to operate the polar relay at the receiving station, but "is' not of sufficient strength to operate the ne'turalfrelay, it is obvious that station Bwill be able to. con'imuni'cate through it's'polar relay at the-receiving end. The armature 7 'will rest at the stops till the brush .5 has'made cir' cuit' with the conductor 6 Through the making of this circuit, the armature 7 a will contact with. 9% thereby" opening the shunt.

,From-this description, it is clearly seen-that -the-' required current will ,flow at the r quired time inde end-ent of the; length of contact of the di erent-contacting. brushes.

His only necessary that"'one' brush should.

be drawn away from the contact S land in I connect so as to throw the armature .of its relay. for the closing ofia shunt and, this shunt will remain closed no matter'if the paper-with its perforation has moved ina 'manner so as tdbre'ak thecontact between the brush and the"c'onducto' r.l This shunt" will'remain closed until the opposite brush has made contact with'the conductor and the shunt will thenremain open 'until the, first brush again connects-tooneof its perforations. Dots and dashes, therefore-may be transmitted from either stat-ion Alor station B and will be receive'classuc'h attl1e're'ceiving station.

-When both stations riand B ftransmit messages andthe brusheswsa y 4 Mand l v conn'e'ct respectively with their conductors :6 and 6 the following willresultz' At sta tiqn B the shunt around. part of the battery 30 is established. Through the establishing of this shunt, the armature 20'of the;ele ctro-' magnet 26 is drawnawayfroin its stop 1'9.

and in'contact with its stop 281 -When now atone and the samc"time, the brush 4 con- I nect's w th-t l1econducto1"6, a shunt is estab lishcd around the remaining partro'f the battery. 30. The battery 30. i's'entirely short I cir'cu'ited and thejvliol e force of the battery 25 is. therefore,'available and-asthe flow of the current from this battery is of a direc-' tionto operate the .polar relay'at the receiving station and as the whole force of the battery is strong enough to operate the neutral relay, it is obvious that .both relays will be operated at one and the same time.

I will nowdescribe the'receiving organ-f ISIDH .,A designates thereceivingorgan smadapted tobe' operated by the transmitting "organism A and the letter B designates the receiving organism 1 adapted to be operated by. the transmitting organism The re ceiying organismA comprises. the neutral relay 40, its armature'41, forward stops 42 and 43. The armature normally rests on sto 42. The coilof the relay 40 is of the connectedto' forward stop 42.

g operationcomparatively strong current inrelayof this system.

, In vqua'druplexing, the chattering of the dependent of its polarity. 50 is part of the printing organism. I have not here'illustrated the .difi'erent parts of the whole arrangement as'they donot form part of my invention and Ihave only shown a step-' l )ystepmovement which,- in the printing system above referred to, is operated by the line neutral relay is one of the greatest disadvantages and for the reason that this chattering should not normally affect the .printing mechanisnuI'. have here interposed between this relay 40 the polarized relay 44. When i q no" current is flowing, the armature 41 impolled by its spring will rest on the stop 42 'and the of the relay 44 is the efliectof the operation forming of the circuit including the battery 45 and the winding 47 will force the tongue 48 of the relay 44- toward and incontact with the stop 51 of the organism 50.

Then, now, through an incoming impulse,

the tongue 41 of the relay 4,0 is forced to-' ward and in contact with the stop 43, closing a circuit including the winding 46' of the (polar relay 44, then the armature 48 of this relay 44 will be forced away from the stop 51'and toward and in contact with the stop 52, thereby making operative necessary devices in the printing organism. The tongue 48 will remain at the stop 52 as long as the tongue 41 of the relay 40 will remain at the stop 43, but should, through any unforeseen circumstances, the tongue 41 vibrate and make and break the contactwith stop 43, this vibration and making and breaking of the contact will not aitect the working of the relay 44 and the tongue of'this relaywill still remain at stop 52 until the tongue 41 of the relay 40 comes to rest at stop 42 and closes the circuit including the winding 47.

Vhen the tongue 41 c'omes to rest at 42, and through unforeseen circumstances, this tongue again vibrates and makes and breaks contact with stop 42, the tongue 48 of the relay 4-1, which is now resting at the stop 51, will remaininthis position independent of the 'ibrations of'the tongue 41 bccai'ise-these vibrations are not strong enough to force the tongue 41 to the stop 43. In reality, the localized relay 4-4- takes the place of the line relay of the printing system as is used t0- day and the resultantciiect of the operation same asthe resultant of the polar line relay I system comprising atiyely connected I of the printing system. of to-day. The receiving organism of-B comprisesthe differ ential .polar relay 60 provided with the tongue (51 and the two forward stops 62 and 63. 64 is a localized difi'erential polar relay; the junction of the two windings connected with the interposition of the battery (35 to the tongue 61. The. winding (56 is connected to the stop 63 and the winding (57 is connected to the stop .62. The differential polar relay 60' is adapted to be operated rough a line current of predetermined.

polarity but requires only a comparatively weak current. A relay, which is adapted to be operated by comparatively small cur rents, would take care of localized instruments which require for their operation a very heavy current, and for this reason and for the reason also that the chattering of the I relay 60 should not injuriously affect the printing instrument, I have inserted between the line relay (i0 and the printing organism 50 the relay 64'. In all other re- -spects, the'operation of the relay 64, as to thdprlnting organism, is the same as described with the organism A.

The artificial lines are designated by the numeral 60. I have described and illustrated the different line relays as being of the differential t1on,- is also applicable to suchsystems in which a bridge is substituted for the differrential coil.

I have only illustrated and described two receiving and two transmitting stations, it being obvious that the remaining two transmitting and receiving stations are duplicates of the stations illustrated.

aving now described my invention, what I claim as new and desire to secure by Letters Patent is '1. In telegraphy, a q'uadruplex printing two transmitting and receiving stations for each terminal of said line, one transmitting station of each terminal comprisin'g'means to transmit positive impulses of shorter long duration in accordance with the charactors to be transmitted, the second transmitting station of each terminal comprisingv means to transmit negative impulses of short or long duration in accordance with the characters to be transmitted, one receivingstation of each terminal comprising a neutral. relay connectedfin'th'e'line, a polar relay operatively connected to the neutral relay and a step-by 'step movement opera'tively connected to thepolafflrelay, the second receiving station comprising a polar relay connected in the line, atively connected to the first named polar relay and a stpby-step movement operto the second'named polar relay.

a line of transmission,

a second polar relay oper- 95 types, but it is obvious that this, my inven 2.1131 quadruplexprinting .telegraphy, a lineoftransmission, two stations for each terminal of said line, each'station equipped with a transmitting and receiving or anism,

the transmitting organism comprising for eachstation alocalizeddifferential polar re-' layand localized means to actuate said relay -comprisi 11% a neutral 1 in accordance with the characters .desiredto :be transmitted and comprising for each'ter- 10.

[with the aid of'said, polar'r'elay, one or the niinlalisources of current andmeans'to shunt,

other of said sources,-u'hereby. required im pulses are impressed upon the line; and for one station of eachterminal. ne relay, a localized polar relay operatively related tosaid neutral. relay and a printing organism opeiatively related to ing organism 'operatiyely related :to said polar relay:

said 'polar relay; and comprising for the second station of each terminal-a. dill'eren tial polar line'relay, apolar relay operatively related to said line-relay and a .print In. quadrupleir printing teleg raphy, a: line of transmission, four transmitting/organisms, two foreac'hterminal, each organism comprisingaflocalized difl'erential polar relay and means toactuate said-relay in accordance'with the characters desired. to be transmitted and comprising for both stations of each't'erininal two sources of current. in opposition astoeach other airdmean's to shunt, with the aid of the relay of ene or.

the other of the-stations,'one'or the otherof said batteries.

4Q In quadruplei: printing telegraphy, line of transmission, -four receiving stations, two ofeach terminal oi said line, one sta- 'tion ofeach terminal comprising a neutral line relay, a differential polar rela-y operatively related to Silltl neutrals-clay and a printing-organism operatively related to said differential polar relay and comprising tor the second station of each terminal a differential polar line relay, a second differential polar relay op'crativelyrelated to said first relay-and a'printing. organism operativcly related to said second polar re- 'lay."

5. In quadruple); printing telegraphy, a

- line of transmission, four transmitting on ganisms, two for each terminal, cachfof said organisms comprising-a localized difi'e'rential polar relay, means to actuate said relay in accordance w th the characters to he transmitted and: means to impress upon the line, through said operation, electr c unpulses necessary for said characters.

' 6. A telegraphlc quadruplex printing sys- 'teincomprising the line of transmission, two

' circuit adapted to he operated y! in presence of t-woiw'itnesses.

stations for-each terminal of said line,

sources of current normally connected to the line for each terminal, means to shunt one' or the other of said sources for each station; of said terminals, one station of each terminal comprisingaincutral relay, the second station of each terminal comprising a polar station of each. terminal and means for said relay to make the same. inoperative to home- -1nipulse s,,a. local1zed circuit, a polar relay and source of-current in saidfcircuit, said circuit adapted-to be; operated ,by said neutral relay, a second local circuit, step-bystep movement in said second" circuit, said second circuit adaptedrto be operated by the localized polar relay, said step-by-step movelnent adapted to .operate ditl'erentprinting;

organism's a polar relay for the second statlOILOf each terminal, means for said polar relay-to make the same inoperativ eto home impulses localized. circuit, a polai re1ay and source of current, in said circuit, said hepolar' line relay; a-secon d, local circui p-hystep movement'in said second-cu said second circuit ada ted-to he operatedby the localizedpolar relay, said step5loy-stepmovementadapted to operate printing organisms.

- '8. In quadruplex printing telegraph'y, the method of transmitting and-receiving character symbols, which consists in locally. developing ata transmitting station 'a short positive and a short negative impulse, pro-. ducing thereby an impulse of predetermined I polarity and of'alengthto accord with the :.lcn;rlh of theclmi'actcr symbol vto transmitted, transunttingrsuch impulse to a re-.

ceii'ing station, producing from'such trans- 'u'.ittcd impulse two impulses, and translatng such impulses into a character symbol one impulse indicating the beginning and one the end ng of such symbol.

In testimony whereof 1 21th my slgnature 'K-rrsEii.

ISIDOR \Vitn'esses:

Many C. SMITH,

ALVAH Rrrrmnonsa.

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iis 

